Ásbyrgi

Ásbyrgi is a horseshoe-shaped canyon up to 100 metres deep, carved into the basalt plateau of northern Iceland within Jökulsárgljúfur National Park, about 65 kilometres south of Húsavík. Geologically, the canyon was formed by catastrophic glacial outburst floods from the Jökulsá á Fjöllum river — likely triggered by eruptions beneath the Vatnajökull ice cap — that scoured the rock within hours. In Norse mythology the canyon is said to be the hoof-print of Sleipnir, Odin's eight-legged horse, a legend that has shaped the site's name ('home of the Æsir'). The sheltered interior hosts an unusually lush birch woodland and a small lake, Botnstjörn, creating a startling green contrast against Iceland's otherwise barren northern highlands. Hiking trails traverse the canyon floor and climb to the rim for sweeping views across Öxarfjörður bay.